2 papers
math.CO2013
Preordered forests, packed words and contraction algebras
Anthony Mansuy
We introduce the notions of preordered and heap-preordered forests, generalizing the construction of ordered and heap-ordered forests. We prove that the algebras of preordered and…
math.RA2012
The bigraft algebras
Anthony Mansuy
In this paper, we introduce the notion of bigraft algebra, generalizing the notions of left and right graft algebras. We give a combinatorial description of the free bigraft algebr…